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Description
LD Systems U305.1 MD Dynamic Handheld MicrophoneThe U300 series handheld transmitter microphone operates in the frequency band 514 542 MHz and features a dynamic capsule with cardioid characteristic, 10 mW output and a 55 Hz to 16 KHz frequency response. It runs on two AA batteries with an operating time of over 10 hours. It is conveniently synchronised via infrared with the U3051 receiver, and a pilot tone ensures disruption free operation. The U3051 HH is easily adjustable for singing and spoken
The U300® series handheld transmitter microphone operates in the frequency band 514 – 542 MHz and features a dynamic capsule with cardioid characteristic, 10 mW output and a 55 Hz to 16 KHz frequency response. It runs on two AA batteries with an operating time of over 10 hours. It is conveniently synchronised via infrared with the U3051 receiver, and a pilot tone ensures disruption-free operation. The U3051 HH is easily adjustable for singing and spoken word thanks to the changeable U500® series-compatible microphone capsules.
General
| Product type | Wireless Microphone System Accessories |
| Type | Transmitters |
| Transmission frequency range | 514 - 542 MHz |
| Channels | 12 |
| Groups | 1 |
| Microphone type | condenser |
| Directivity | Cardioid |
| Frequency response | 55 - 16000 |
| Signal-to-noise ratio | 104 dB |
| Rated HF output power | 10 mW |
| Controls | Power On/Off |
| Indicators | ASC IR Sync (Green/Amber Blinking LED), Battery (low battery: red), Power LED (Power ON: green) |
| Operating voltage | 2 x AA battery |
| Operating time | >10 h |
| Length | 257 mm |
| Diameter | 50 mm |
| Weight | 0,235 kg |
| Other features | IR frequency synchronisation, Pilot tone |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.6 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Easy to use
Size: 58.3mm, Color: Black
Great for make good coffee and easy to use.
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Reviewed in the United States on October 24, 2025
★★★★★ 5
Take the guess work out of the flow!
Size: 58.3mm, Color: Black
I got this because when my wife makes espresso, it's watery. When i make it, it's fine. We needed a controlled Tampering method so we both do the same job.
This is heavy, and being able to use the whole hand instead of fingers, not much effort is needed.
Since we purchased this, we were able to make consistent espresso shots for sure.
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Reviewed in the United States on July 12, 2024
★★★★★ 3
Not as good as I expected
When it first came, the box fell apart as I was taking it out, and a lot of some kind of dirt or sand kept falling out all over my table and floor. I had the take the entire thing apart and thoroughly wash it.
After drying age reassembling it, I tried it on my portafilter that came with my Breville Barista Express, but, somehow, it doesn't always make the tamping level. You would think with the ridge that rests on the side of the portafilter that it would force it to remain level, but, somehow, it doesn't, at least not consistently. It also has varying lengths (heights, or depths), and a single spring tension, so you may still over tamping or under-tamp. I was expecting it would have a censor that would just detect once it reached 30 lbs of force and cut off after that, similar to a torque screwdriver, but that's not what this is.
I'll still give it 3 stars because, despite the problems mentioned above, it at least produces some amount of consistency, even if that isn't measurable; but, I can't give it 5 stars because of those issues mentioned above.
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Reviewed in the United States on January 7, 2025
★★★★★ 5
This is the one.
Size: 58.3mm, Color: Black
As an el Supremo Coffee Geek, I've wasted money on lots of different tampers. Save your money and buy this one or it's equivalent. This thing is heavy duty, solid, well-made, self-leveling, tamps at 30 pounds and is fool-proof even for fools. Also, it's a palm tamper meaning more fun and more satisfying to use as you prep the puck for your morning buzz. Buy it. You will thank me.
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Reviewed in the United States on March 30, 2024
★★★★★ 5
Super easy to use and takes the guess-work out of getting even pressure on the grounds
Size: 58.3mm, Color: Black, Size: 58.3mm, Color: Black
I have been using a hand tamper for many years and have a good idea of the pressure I am applying to the grounds in the portafilter. I honestly considered spring tampers to be a bit silly. But this tamper really does take the guess-work out of pressing the coffee grounds. The shroud helps guide the press so that pressure is applied even and flat across the surface. With the manual tamper, there will be some play when pressing, or some unevenness in pressure. This is especially true when cranking out many espressos during a breakfast party with friends. Having the spring tamper makes quick work of turning out a lot of coffees with consistency.
There are no instructions for taking this tamper apart to clean inside, and you may not really need to do that very often. After each use, just pull back the shroud (the black piece that moves up and down) and wipe off the tamper (the shiny steel part). This will help prevent grounds from working their way inside. If you do want to take it apart, it’s easy. Pull back the shroud and unscrew the tamper. It will come apart into three pieces. Wipe the pieces off and reassemble. Super quick and easy.
This tamper is very heavy. My scale shows 656 g (about a pound and a half). It fits the portafilter exactly, with no slop. Just place on top of grounds and press!. Don’t even worry about pressure, just push down all the way. Overall I had fun using this tamper versus my manual one. And since I make myself a cappuccino very early in the morning, I don’t have to be very awake to get a good pack on the grounds and get my coffee fast!
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Reviewed in the United States on January 10, 2024